I got a blister 7 months ago from a pair of ill fitting high heels (for a wedding) its located about 1 inch below my second toe on my right foot. Never popped the blister to prevent infection, it never really healed what i thought was a callous soon became very painful, upon inspection I noticed the callous looked strange it was semi translucent and appeared to be on top of a hole, walking on it feels like I m constantly stepping on a pebble or a small piece of glass. So it s been there for 7 months and just today while I was at work I pivoted on my foot and felt a sharp pain, upon inspection it looks like the callous tore Away on one side revealing a small deep hole I removed the rest of the dangling callous skin underneath is a pale purple with the hole directly in the middle going down into the meat of my foot. It doesn t look like a wart I have had one before I cant figure out what it is but I do know that it hurts